.TH std::sub_match::length 3 "2024.06.10" "http://cppreference.com" "C++ Standard Libary"
.SH NAME
std::sub_match::length \- std::sub_match::length

.SH Synopsis
   difference_type length() const;

.SH Parameters

   \fI(none)\fP

.SH Return value

   Returns the number of characters in the match, i.e. std::distance(first, second) if
   the match is valid, 0 otherwise.

.SH Complexity

   Constant.
